Prediction and Comparison of Maximum O2 Pulse in Male Adolescents Udc 612: -053.6

The oxygen pulse as an indicator of O2 transport in the circulatory system has recently been subjected to study and clinical investigations, and not much information has been reported about this cardiovascular variable. The purpose of this study has been the prediction and comparison of maximal O2 pulse in male adolescents. For this purpose, 60 adolescents with a mean (S.D) of age, weight and height of 16 ± 0.81 years, 59.92 ± 10.39 kg and 168 ± 8.17 cm respectively, who were sampled randomly, participated in this research. To predict maximal O2 pulse, the subjects performed 4 exercise tests: GXT Treadmill test, PWC 195, PWC 212 ergometer tests and a one mile run test. In order to select the optimum exercise test, the values obtained from 4 exercise tests were compared using the Cooper predictive protocol (criterion protocol). The GXT test, in comparison with the PWC 195, PWC 212 and 1 mile run test, revealed an objective prediction of a maximal O2 pulse (14.40 ml/beat), and did not show any significant difference from the Cooper protocol (P = 0.519). The PWC 195 (P = 0.001), PWC 212 (P = 0.001) and 1 mile run test (P = 0.003) showed significant differences (with regards to overestimation, and underestimation) when analyzed with the Cooper protocol. These results suggest that maximal O2 pulse, as an indicator of cardiopulmonary efficiency, is predicted more objectively by the GXT test than other exercise tests, so that the value of O2 pulse max results obtained from this test is very close to the Cooper standards.